defensive military fortification

BUNKER
WordClue
POSTmilitary or telegraph
CADETunder training military officer
CORPSmilitary unit size
MAJORmilitary rank
SIEGEmilitary blockade
CAMPAIGNadvertising or military
CORPORALmilitary rank
GARRISONpermanent military post
INVASIONmilitary offensive
MARSHALLmilitary rank
REGIMENTmilitary unit size
SERGEANTmilitary rank
TRAININGathletic or military
VANGUARDpart of military formation
BATTALIONmilitary unit size
BRIGADIERsenior military rank
GUARDHOUSEThe building housing military police
LIEUTENANTmilitary rank
LINEBACKERdefensive position in American football
WATCHTOWERfortification
SHIELDdefense
LINEBACKERdefensive position in American football